Door opener



April 29, 1924. 1,491,887

E. G. SIMPSON DOOR OPENER Filed Dec. 15, 1922 2 Sheets-Sheet 1 nQeniomEmory 6201/: 52mm April 29 1924. 1,491,887

E. G. SIMPSON DOOR OPENER Filed Dec. 15, 1922 2 Sheets-Sheet 2 1 4m" gEfgg;

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,OF DETROIT, MICHIGAN, ASSIGNOR TO FISHER BODY COB- IIOHIGAR', ACORPORATION O! NEW YORK- DO R OPENED.

I I Application fled December To all whom it may oovwem."

Be it known that'I, EMORYGLENN Smrson, citizen of the United States,residin at Detroit, in the county of Wayne an State of Michigan, haveinvented certain new and useful Improvements in Door Openers, of whichthe following is a specification.

This invention relates to door openers and has for its object a devicecalculated to throw the door partially open as the latch is released.In'the doors nowused in automobile body construction it is cust'omarg touse some form'of a gripping device to old the door securely to thedoorpost so as to prevent vibration and rattling; one of the devices commonin use in closed body construction is made under the OBrien Patent No.1,098,393, June 2, 1914. This device is called commercially a dove-tail.Itis very eflective for securely holding the door and preventingrattling, but it causes the door to stick when an efiort is made to openit due to the heavy pressure under which the striker on the door isgripped. It is the object of the present invention to store energy whenthe door is closed, which energy is released when the latchis'retrac'ted and used to throw the door open so as to avoid the efiortotherwise necessary to disen age the door from the grippin device.urthermore, the door may stic for other reasons, such as the fit of thehinges or the fit in the door opening. p

In the drawings:

Fig. 1 is an inside elevation of a fragmentary body construction showingin dotted lines the latch, the door gripping device, and the dooropener.

Fig. 2 is a vertical section through the door gripping device.

Fig.- 3 1s a Fig. 4 is a fragmentary vertical section of a modified formof door gripping device and door opener taken on the inc 44 of Fig. 5.

Fig. 5 is a cross section of the same.

Fig. 6 is a section taken on the line H of Fig. 5.

Fig. 7 is a pers ective oi the rubber block in the gripping evice.

Fig. 8 is a perspective of the wear of on Re arring to Figs. 1 to 3inclusive, a

membe;

. mount a spiral'spring I: which has a spring section on the line 3 -3of.

15, 1922. Serial in. 007,115.

represents an ordinary door latch now in, common use. 1 This is securedto the door .5 while the keeper 0 is secured to the door post rd; Thereis ordinarily used in connection with. the latch, a gripging devicedesignated 0 which is commo called a dove-tail and which is provi edwith a striker f.. This ipping device or dove-f tail is detailed in i 2and 3 and com rises 'a casing g provide with -u per and ower chambers hand 2. It has n customary to fill both of these chambers with rubberblocks 5, however, in the lower chamber 1 arm m adapted to engage withthe nose 0 the striker f and put un er strain when the striker travelsbetween the stationary wear plate n and the movable wear plate 0. Themovable wear plate is sli htly raised and the rubber block distorte andconse uently -securely grips thestriker f. This ho door from rattling.

When the door atch is released the s ring arm m exercises a force ofsubstantia y 40 lbs. against the nose of the striker and forces it outbetween the wear members and causes the door to open clear of the dooropening; this enables the door to be easily pushed open.

In Figs. 4 to 8 inclusive I have shown a modified form in which the dovetail is con 'structed precisely as has been heretofore the custom butthe spiral spring a: is secured by clip y to an angle plate n riveted tothe backof the casing The'spiral spring has an arm p adapte to engagethe striker f and be ut under strain. When the latch is released thearm 1) throws to the dotted line positionshown in Fig. 5 therebydisengaging the striker between the movable wear plates 0. What I claimis: 1. In a dovetail device, the combination of a casing, resilientmeans in the casin a air of wear members, a striker adapte to be securedto the door for entering between the wear members and separating themagainst the resistance of theyielding members, and a sprin operatingindependently of said dovetai-l andssupported adjacent by said casingsaid spring operating between the wear members and put under strain bythe striker engaging the same when the door closes, whereby when thedoor latch is released the spring will throw the ds the member clear ofthe wear members and partiailynopen the door.

2.1111 a dove-tail member, the eombination of a casing, the casingexerting pressure, wear plates engaged'by said member, a-striker gm:-between the Wear plates for spreadin the same, and a spinal sp arm inthe path of the striker between the Wear plate; for exerting pressureagainst the striker to release the same from the wear plates when thedoor latch is released 3.111 a dove-tail, the combination of a easingadapted to be by the door post having a rubber block and wear plates,

e striker adapted to hesnpported by the door and adapted to drive inbetween the wear plates to spread them against the resistance of theblocks and ge spring slippertel by the easinn' endereting independentlyof the dew said spring a yieidahie member in operating nude pendenti'yof said -dovetail and having one adapted to he put under strain hy thestriker when the same travels between the wear plates, whereby when thedoor latch is released such spring exerts suficient energy against thestriker to throw the same clear of the wear plates and partially epenthe door when the latch is wr- 4a, In a. dove-tail device, thecombination of a casing, a resilient means in the casing, a pair ofwear-members acted upon by the resilient means, a mrikeradaptedto hesecared to the door for entering between the nMenY enema e a.

